Determine the numbers of grams of sicl4are obtained
Determine the numbers of grams of SiCl4are obtained in the reaction of 2.8 g of silicon with excess the chlorine in the direct reaction of silicon with Cl2 the yield of SiCl4 is 50 percent?
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If the activation energy for this reaction is 52. KJ/mole, determine the rate constant at a temperature of 30.0°C? The rate constant for a certain chemical reaction is 74.0s-1 at a temperature of 20.0°C.
When 30.5g nitrogen and 56.6g calcium gas undergo a reaction that has a 90.0% yield, explain what mass of calcium nitride produces? Ca +N2--> Ca3N2 (unbalanced)
The final temperature of the mixture is 31.1 degrees C. What is the specific heat capacity of the metal alloy when a 53.0g metal alloy ingot at 93.0 degrees C is added to 290g of water at the 22.0 degrees C in an insulated calorimeter?
The element Mercury, Hg, is a silvery liquid at the room temperature. The normal freezing point for Mercury is -39.9oC, and its molar enthalpy of fusion is? Hfusion =2.29 KJ/mol.
Explain the minimum amount of ethanol required to re-crystallize 2.0 gram sample of compound X when the solubility of an unknown compound X in ethanol is found to be 0.21 grams per 10 mL at 0o Celsius and 1.4 grams per 10mL at 78oC.
A mixture of 175 g of iron(III) chloride (162.2 g/mol) and 41.0 g of magnesium (24.31 g/mol) is allowed to react. Determine what mass of magnesium chloride = 95.21 g/mol is produced?
The ship leaves port of Miami with the bearing of S80E and the speed of 15 knots. After one hour, ship turns 90 degrees toward south. After two hours, maintaining same spped, find bearing to ship form port?
At 25°C a certain batch of fire flies were observed to "flash" at the rate of 16.6 times per minute and at the lower rate of 5.5times a minute at a temperature of 15°C.
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